<template>
	<div>
		<!-- 面包屑导航区 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>用户管理</el-breadcrumb-item>
			<el-breadcrumb-item>用户列表</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片视图 -->
		<el-card>
			<el-row :gutter="20">
				<el-col :span="8">
					<el-input placeholder="请输入内容" @clear="getUserList" v-model="queryInfo.query" clearable>
						<el-button slot="append" icon="el-icon-search" @click="getSearch()"></el-button>
					</el-input>
				</el-col>

				<el-col :span="4">
					<el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
				</el-col>
			</el-row>
			<el-table :data="userList" border stripe>
				<!-- stripe: 斑马条纹
				border：边框-->
				<el-table-column type="index" label="#"></el-table-column>
				<el-table-column prop="username" label="姓名"></el-table-column>
				<el-table-column prop="email" label="邮箱"></el-table-column>
				<el-table-column prop="mobile" label="电话"></el-table-column>
				<el-table-column prop="role_name" label="角色"></el-table-column>
				<el-table-column label="状态">
					<template v-slot="scope">
						<el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
					</template>
				</el-table-column>
				<el-table-column label="操作">
					<template v-slot="scope">
						<el-button
							type="primary"
							icon="el-icon-edit"
							size="mini"
							circle
							@click="showEditDialog(scope.row.id)"
						></el-button>
						<el-button
							type="danger"
							icon="el-icon-delete"
							size="mini"
							circle
							@click="removeUserById(scope.row.id)"
						></el-button>
						<el-tooltip
							class="item"
							effect="dark"
							content="角色分配"
							:enterable="false"
							placement="top"
						>
							<el-button
								type="warning"
								icon="el-icon-setting"
								size="mini"
								circle
								@click="showSetRole(scope.row)"
							></el-button>
						</el-tooltip>
					</template>
				</el-table-column>
			</el-table>
			<!-- 分页区域 -->
			<el-pagination
				@size-change="handleSizeChange"
				@current-change="handleCurrentChange"
				:current-page="queryInfo.pagenum"
				:page-sizes="[2, 5, 10]"
				:page-size="queryInfo.pagesize"
				layout="total, sizes, prev, pager, next, jumper"
				:total="total"
			></el-pagination>
		</el-card>

		<!-- 添加用户的对话框 -->
		<el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
			<!-- 内容主体 -->
			<el-form
				:model="addUserForm"
				ref="addUserFormRef"
				:rules="addUserFormRules"
				label-width="100px"
			>
				<el-form-item label="用户名" prop="username">
					<el-input v-model="addUserForm.username"></el-input>
				</el-form-item>
				<el-form-item label="密码" prop="password">
					<el-input v-model="addUserForm.password"></el-input>
				</el-form-item>
				<el-form-item label="邮箱" prop="email">
					<el-input v-model="addUserForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机" prop="mobile">
					<el-input v-model="addUserForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
		</el-dialog>


		<!-- 修改用户的对话框 -->
		<el-dialog
			title="修改用户信息"
			:visible.sync="editDialogVisible"
			width="50%"
			@close="editDialogClosed"
		>
			<!-- 内容主体 -->
			<el-form
				:model="editUserForm"
				ref="editUserFormRef"
				:rules="editUserFormRules"
				label-width="70px"
			>
				<el-form-item label="用户名">
					<el-input v-model="editUserForm.username" disabled></el-input>
				</el-form-item>
				<el-form-item label="邮箱" prop="email">
					<el-input v-model="editUserForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机" prop="mobile">
					<el-input v-model="editUserForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser">确 定</el-button>
      </span>
		</el-dialog>


		<!-- 分配角色对话框 -->
		<el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
			<div>
				<p>当前用户：{{userInfo.username}}</p>
				<p>当前角色：{{userInfo.role_name}}</p>
				<p>
					分配角色：
					<el-select
						v-model="selectRoleId"
						filterable
						allow-create
						default-first-option
						placeholder="请选择文章标签"
					>
						<el-option
							v-for="item in rolesLsit"
							:key="item.id"
							:label="item.roleName"
							:value="item.id"
						></el-option>
					</el-select>
				</p>
			</div>
			<span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
		</el-dialog>

	</div>
</template>

<script>
  export default {
    data() {
      // 自定义邮箱规则
      let checkEmail = (rule, value, callback) => {
        const regEmail = /^\w+@\w+(\.\w+)+$/
        if (regEmail.test(value)) {
          // 合法邮箱
          return callback()
        }
        callback(new Error('请输入合法邮箱'))
      }
      // 自定义手机号规则
      let checkMobile = (rule, value, callback) => {
        const regMobile = /^1[34578]\d{9}$/
        if (regMobile.test(value)) {
          return callback()
        }
        // 返回一个错误提示
        callback(new Error('请输入合法的手机号码'))
      }
      return {
        // 获取用户列表查询参数对象
        queryInfo: {
          query: '',
          // 当前页数
          pagenum: 1,
          // 每页显示多少数据
          pagesize: 2
        },
        userList: [],
        total: 0,
        // 添加用户对话框
        addDialogVisible: false,
        // 用户添加
        addUserForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
        },
        // 用户添加表单验证规则
        addUserFormRules: {
          username: [
            {required: true, message: '请输入用户名', trigger: 'blur'},
            {
              min: 2,
              max: 10,
              message: '用户名的长度在2～10个字',
              trigger: 'blur'
            }
          ],
          password: [
            {required: true, message: '请输入用户密码', trigger: 'blur'},
            {
              min: 6,
              max: 18,
              message: '用户密码的长度在6～18个字',
              trigger: 'blur'
            }
          ],
          email: [
            {required: true, message: '请输入邮箱', trigger: 'blur'},
            {validator: checkEmail, trigger: 'blur'}
          ],
          mobile: [
            {required: true, message: '请输入手机号码', trigger: 'blur'},
            {validator: checkMobile, trigger: 'blur'}
          ]
        },
        // 修改用户
        editDialogVisible: false,
        editUserForm: {},
        // 编辑用户表单验证
        editUserFormRules: {
          email: [
            {required: true, message: '请输入邮箱', trigger: 'blur'},
            {validator: checkEmail, trigger: 'blur'}
          ],
          mobile: [
            {required: true, message: '请输入手机号码', trigger: 'blur'},
            {validator: checkMobile, trigger: 'blur'}
          ]
        },
        // 分配角色对话框
        setRoleDialogVisible: false,
        // 当前需要被分配角色的用户
        userInfo: {},
        // 所有角色数据列表
        rolesLsit: [],
        // 已选中的角色Id值
        selectRoleId: ''
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      async getUserList() {
        const {data: res} = await this.$http.get('users', {params: this.queryInfo})
        // console.log(res)
        if (res.meta.status !== 200) {
          return this.$message.error('获取用户列表失败！')
        }
        this.userList = res.data.users
        this.total = res.data.total
      },
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      // 监听 页码值 改变事件
      handleCurrentChange(newSize) {
        // console.log(newSize)
        this.queryInfo.pagenum = newSize
        this.getUserList()
      },
      getSearch() {
        this.queryInfo.pagenum = 1
        this.getUserList()
      },
      // 监听 switch开关 状态改变
      async userStateChanged(userInfo) {
        // console.log(userInfo)
        const {data: res} = await this.$http.put(
          `users/${userInfo.id}/state/${userInfo.mg_state}`
        )
        if (res.meta.status !== 200) {
          userInfo.mg_state = !userInfo.mg_state
          return this.$message.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功！')
      },
      // 编辑用户信息
      async showEditDialog(id) {
        const {data: res} = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('查询用户信息失败！')
        }
        this.editUserForm = res.data
        this.editDialogVisible = true
      },
      // 删除用户
      async removeUserById(id) {
        const confirmResult = await this.$confirm(
          '此操作将永久删除该用户, 是否继续?',
          '提示',
          {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
          }
        ).catch(err => err)
        // 点击确定 返回值为：confirm
        // 点击取消 返回值为： cancel
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const {data: res} = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
        this.$message.success('删除用户成功！')
        this.getUserList()
      },
      // 展示分配角色的对话框
      async showSetRole(role) {
        this.userInfo = role
        // 展示对话框之前，获取所有角色列表
        const {data: res} = await this.$http.get('roles')
        if (res.meta.status !== 200) {
          return this.$message.error('获取角色列表失败！')
        }
        this.rolesLsit = res.data
        this.setRoleDialogVisible = true
      },
      //添加用户
      addUser() {
        // 提交请求前，表单预验证
        this.$refs.addUserFormRef.validate(async valid => {
          // console.log(valid)
          // 表单预校验失败
          if (!valid) return
          const {data: res} = await this.$http.post('users', this.addUserForm)
          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败！')
          }
          this.$message.success('添加用户成功！')
          // 隐藏添加用户对话框
          this.addDialogVisible = false
          this.getUserList()
        })
      },
      // 监听 添加用户对话框的关闭事件
      addDialogClosed() {
        this.$refs.addUserFormRef.resetFields()
      },

      editDialogClosed() {
        this.$refs.editUserFormRef.resetFields()
      },
      // 修改用户信息
      editUser() {
        // 提交请求前，表单预验证
        this.$refs.editUserFormRef.validate(async valid => {
          // console.log(valid)
          // 表单预校验失败
          if (!valid) return
          const {data: res} = await this.$http.put(
            'users/' + this.editUserForm.id,
            {
              email: this.editUserForm.email,
              mobile: this.editUserForm.mobile
            }
          )
          if (res.meta.status !== 200) {
            this.$message.error('更新用户信息失败！')
          }
          // 隐藏添加用户对话框
          this.editDialogVisible = false
          this.$message.success('更新用户信息成功！')
          this.getUserList()
        })
      },
      // 分配角色
      async saveRoleInfo () {
        if (!this.selectRoleId) {
          return this.$message.error('请选择要分配的角色')
        }
        const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectRoleId })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户角色失败！')
        }
        this.$message.success('更新角色成功！')
        this.getUserList()
        this.setRoleDialogVisible = false
      },
      setRoleDialogClosed() {
        this.selectRoleId = ''
        this.userInfo = {}
      }
    },

  }
</script>

<style lang="less" scoped>
	.el-pagination {
		float: right;
	}
</style>
